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Finding the Fourth Proportional to 139,482.40, 192,501.84 and 82,893.28

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Solution

The fourth proportional to 139,482.40, 192,501.84 and 82,893.28 is: 114,402.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,482.40 : 192,501.84 = 82,893.28 : x
  2. Step 2: Convert to fraction form
    139,482.40/192,501.84 = 82,893.28/x
  3. Step 3: Cross multiply
    139,482.40x = 192,501.84 × 82,893.28
  4. Step 4: Simplify right side
    139,482.40x = 15,957,108,923.64
  5. Step 5: Solve for x
    x = 15,957,108,923.64/139,482.40
  6. Step 6: Final answer
    x = 114,402.31

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.